When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Solve -9a - 5a = -2a + 6y + 1 for a in terms of y.
| -13y + 1 | |
| -1\(\frac{4}{7}\)y - \(\frac{1}{7}\) | |
| -\(\frac{1}{8}\)y - \(\frac{1}{2}\) | |
| 1\(\frac{2}{3}\)y - 2 |